After flashing 4.3 you should have a CleanRom folder on your SD card. In that is a StockBattery.zip. Flash that and you should get the old battery icon back. It may not be blue if they haven't included it in these mods.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer? | Terms of Service